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Expression of Toll-like receptor 2 and 4 gene in rat lung tissue in acute lung injury complicated by acute necrotizing pancreatitis
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF PANCREATOLOGY
- Issue:
- 1
- DOI:
- 10.3760/cma.j.issn.1674-1935.2006.01.006
- Key Word:
- Toll样受体;胰腺炎,急性坏死性;肺脏
Abstract： 目的研究急性坏死性胰腺炎(ANP)肺组织中Toll样受体2、4(TLR2、4)mRNA的表达及其意义.方法采用逆行胰胆管注射牛磺胆酸钠(TAC)诱导ANP肺损伤动物模型,并分为假手术组、胰腺炎组和氯喹阻断组.计算肺组织学分值和肺损伤指数以评价肺损伤程度,荧光实时定量-PCR方法检测不同组不同时间点肺组织TLR2和TLR4 mRNA表达变化.结果与假手术组比较,胰腺炎组大鼠3 h时肺组织TLR2、4 mRNA表达开始增高,12 h时达到峰值(P < 0.05),同时,肺损伤加重,肺组织TNF-α浓度升高,NO浓度逐渐降低;给予氯喹治疗后,TLR2、4 mRNA表达降低,肺损伤程度减轻,肺组织TNF-α浓度降低,NO浓度显著升高.结论 ANP时,肺组织内TLR2和TLR4的基因表达上调,其升高同肺组织损伤呈正相关,在ANP肺损伤的发生、发展中起一定作用.
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